System of heating.



G. E. HULSE.

SYSTEM OF HEATING.

APPLICATION FILED APR. 10, 1909.

1,052,923 Paten ted Feb. 11, 1913.

2 SHEETS-SHEET 1.

VENTOR TTOR/VE rs G. E. HULSE.

SYSTEM OF HEATING.

APPLIGATION FILED APR.10, 1909.

1,052,923 Patented Feb. 11,1913;

2 SHEETS-SHEET 2.

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chamber 45 9 OMHefCBamber W/T/VESSES: g 21 l/ENTOR J L Y v B /MM Wy y MmATTOR/VE Y5 UNITED STATES P TENT oFEroE.

GEORGE EGBEIRT nnLsE, OF NEWARK, NEw ERSEY, ASSIGNOLR To SAEETY canHEATING a LIGHTING COMPANY, A conroEA mN or NEW JERSEY.

' SYSTEM OEHEATI G.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, GEORGE E. I-IULsE, a.

citizen of the United States, residing at Newark, in the countyof Essexand State of New Jersey, have invented certain new and usefulImprovements in Systems of Heating, of which the following is afull,clear,

' economical construction.

.and' exact description,. such as will enable others skilled in the artto which it appertains to make and use the same. I

This invention relates to heating systems and. more particularly to carheating systems.

One of the objects thereof is to provide an eificient heating system inwhlch the temperature of an apartment is automatically maintainedsubstantially constant.

Another object is'toprovide a device to be used in a system of thischaracter which will be quick to respond to variations in temperature,and which will be positive in its action.

- I Another object is to providea device of this character which will besimple inoperation and which will be of durable and Other objects willbe in part obvious and in'part pointed out hereinafter.

The invention accordingly consists in the features of construction,combinations of elements and arrangement of parts which will beexemplified in the construction hereinafter set forth, and the scope ofthe application'hf which will be indicated in the following claims.

' In the accompanying drawings, wherein is shown one f various possibleembodi- 'ments of the invention, Figure 1 is a perspective Viewillustrating the relative positions of the various 'parts of the system;

. Fig. 2 is a vertical, sectional view taken through the automatic,regulator and the main valve; Fig. 3 is a side elevation of the valve;and Fig. 4 is an enlarged detail view of the piston in the inletchamber.

In the drawings, in which similar reference numerals indicate similarparts throughout the several views, the system is shown as applied to arailway car, for which use it is peculiarly adapted.

A train pipe 1 which isin connection with a source of supply of a heatedmedium,

preferably steam from a locomotive, is connected by branch piping 2 tothe radiators 3 located in the varlous cars, the said radi- PatentedFeb. ,11, 1913. Application filed. April 10, 1909.-- Serial No, 489,224.

2 is avalve 5 located within a suitable casing 6 provided with inlet andoutlet chambers 7 and 8'. The valve5'is provided with a stem 9 to whichis secured a disk, or piston 10 so positioned as to divide the inletchamher 7 into upper and lower portions'll and 12 and adapted to permita leakage of fluid from said portion 12 to said portion 11- whereby thepressures in said portions are normally equalized, and the upper portionof the valve stem 9 preferably engages wi a socket 13 formed in thecasing, whereby it is guided in its movements. The upper portion ll'ofthe chamber 7 communicates by a conduit 14 with the chamber 15 providedwith;an opening lfi-co-mmnnicating with the outletchamber 8 of the valvecasing 6, and. the flow of the heated medium through said opening 16 is"controlled by the auxiliary valve 17 which may be provided with asuitable spring 18 adapted to hold said "alve upon its seat.' The outerextremity of said auxiliary valve operatively engages a diaphragm 19secured to the valve casing in any suitable manner. A spindle 20mountedto reciprocate withinthe casing is positioned with one of itsends engaging said diaphragm 19 and its other'end engagmg a diaphragm 21secured within the lower portion of the casing and forming therewith achamber 22.v A spring 23 tends to raise said diaphragm and said spindleto unseat theauxiliary valve -17, the tension of said spring ,beinggreater than the tension of the spring 18. Aconduit 24 communicates atone end with the chamber 22 and, at its opposite end with the chamber 25formed w1th1n the regulator casing 26 and separated from chamber 27also, formed in said casing, by a flexible diaphragm 28, and saidchambers 22 and 25 and the communicating conduit 24 are completelyfilled with a nonexpansive liquid-by means of which move-o ment of thediaphragm 28will be communicated tothe diaphragm 21. The chamber 27contains a volatile liquid 28 such as chloroform the vapor of whichcompletely fills the piping 29, the ends of which are closed and which,preferably extends substantially throughout the length of the car abovethe windows'thereof and is 'in communication with. said chamber as,clearly shown in Fig. 1. The regulator casing is preferably mounted,upon the side wall of the car adjacent the piping 29.

The operation of the system, which should be largely obvious from theabove description, isas follows: Supposing the temperature of the car tofall below a certain predetermined point, the pressure of the vaporwithin the piping 29 and chamber 27 will.

be decreased, permittin the diaphragm 28 to'move to the left in Fug. 2,and the spring 23 acting against diaphragm 21 will force the sameupward, forcing the non-expansible liquid out ofthe chamber 22 andcausing it to move upward in the piping 24 and simultaneously will causethe stem to move upward, thereby unseating the auxiliary valve 17. Assoon as said valve is unseated the upper surface of said piston is thusrelieved the pressure acting upon the lower surface of said piston willcause the valve 9 to move off of its seat, thus permitting the heatedmedium to flow to the radiators 3. If, now, the temperature rises abovesaid predetermined point the pressure of the vapor in piping 29 andchamber 27 will increase; thus causing a reverse movementof thediaphragm 28 which in turn will force the nonexpanslble liquid downwardthrough the ,pipe 24 into the chamber 22, causing the diaphragm-21 tobemoved against the tensionof the spring 23 and permitting the spring 18to seat the auxiliary valve 17, which results in closing the outlet ofthe upper portion 11 of the inlet chamber 7 The pressure upon the uppersurface of the piston 10 will then equal the pressure upon the lowersurface thereof, and on account of the pressure acting upon the uppersurface of said valve it will be seated, thus cutting ofi the supply of,the heated medium from the radiators.

Whlle the system has been shown as ap- "pliedto, and as peculiarlyadapted to, a

railway car, it will, of course, be understood that it could beinstalled in any building or apartment wherein it is desired to maintaina constant temperature.

Asmany changes could be made in the above construction and manyapparently widely different embodiments of this inven-' tion couldbe'made without departing fromthe scope thereof, it is intended that allmatter contained in the above description or shown; inthe accompanyingdrawings shall be; interpretednas JIlustrati and not; im a limitingsense.. I J Ila-is also.- to. .beiunderstood that ithef alan- I guageused in-the following claims is intended to cover all of the generic andspecific features of the invention herein described,

and all statements of the scope of. the inventionwhich, as a matter oflanguage, might be said to fall therebetween.

claim as new and desire t-o secure by Letters Patent 1s: 1 0 1. In aheating system, in combinatlon,

' .Having described my invention, what 'I piping adapted to convey aheated medium from a source of supply to a radiating.

means, a chamber interposed insaid piping,

a valve insaid chamber, a stem attached to said valve, a pistonattachedto said stem and dividing said chamber into an upper and lower portion,a second chamber, a conduit leading from said first mentioned cham berthereto, an auxiliary valve seated in said second chamber, means adaptedto actuate said auxiliary valve to permit. fluid c011- tained in; saidfirst mentioned chamber to flow therefrom through said conduit to saidsecond mentioned chamber, said means comprising a fluid-containingchamber provided with a diaphragm, a spindle having one end resting onsaid diaphragm, and a second diaphragm contacting with the other end ofsaid spindle, said fluid being adapted upon motion therein to movesaiddiaphragms to thereby actuate said auxiliary valve'in ac-.

cordance with changes in the temperature in said system.

2. In a heating.system, in combination, a valve, means for controllingthe movement thereof, comprising a chamber, a diaphragm insaid chamber,aspindler'esting on said diaphragm,a second diaphragm contacting withtheother end of said spindle, and heat sensitive means adapted to movesaid spin-' dle comprising a reservoir containing a' nonexpansiveliquid, piping permitting said liquid to fill said chamber and saidreservoir, and a second set ofpiping extendin sub stanti'ally throughoutthe length 0 said compartment and rovided with the vapor of a volatileliqui q 3. In a heating system, in combination, a chamber, a valvesituated therein, a diaphragm contacting.with said valve, a spindlecontacting Wlth said diaphragm and adapted to move said valve, meansadapted to move said-spindle comprising a second diaphragm situated in asecond chamber containing a non-expansive liquid, and a closed pipecontaining a portion of the vapor of a volatile liquid.

4. In a heating system, in combination, a valve situated in a chamber,one end of said valve resting on a diaphragm, a spindle contacting withthe other side of said diaphragm at a ointbelow said valve, the othenendof sald spindle resting on a second diaphragm? situated fin a secondchamber, saidsecondfchamberlbeing supplied with a non-expansive liquidby piping leading from a liquid-containing chamber, saidliquidcontaining chamber being divided into two portions, one ofsaid'portions containing a quantity of non-expansive liquid, the othercompartment of said chamber containing a volatile liquid, and a secondpipe extending substantially throughout the length of the compartment tobe heated, said pipe being connected to said liquid-containing chamberand normally adapted to contain vapor produced by said volatile liquid,whereby said valve will be operated in accordance with changes in thecondition of said vapor.

5. In a heating system, in combination, a casing comprising a chamberfor receiving fluid, a valve therein, a piston attached to said valveand situated in said chamber,

said piston being constructed to permit leakage of fluid thereabout, asecond chamber communicating withsaid first chamber, an auxiliary valvetherein, and means adapted to actuate said auxiliary valve, comprising aheat sensitive medium acting upon a nonexpansive liquid acting in turnon a diaphragm, said diaphragm acting to move a spindle, said spindlebeing adapted to move a second diaphragm, said second diaphragm beingadapted to move said auxiliary valve. In testimony whereof I aflix mysignature, in the presence of two witnesses.

I GEORGE EGBERT HULSE.

I Witnesses:

E. E. .ALLBEE, W. L. GARLAND.

